One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,11)(4,7)(5,10)(6,9)(8,14)(12,15)(13,16)(17,18,22,26,23,27,21,37)(19,28,30,24,32,39,31,40)(20,33,36,25,34,42,35,41)(29,44,46,43,45,38,47,48)(2,7)(4,5)(8,15)(9,10)(11,16)(13,14)(17,19,22,30,23,32,21,31)(18,24,26,39,27,40,37,28)(20,29,36,46,34,45,35,47)(25,38,42,48,41,44,33,43)(1,3)(2,8)(4,14)(5,13)(6,12)(7,15)(9,16)(10,11)(17,20)(18,25)(19,29)(21,35)(22,36)(23,34)(24,38)(26,42)(27,41)(28,43)(30,46)(31,47)(32,45)(33,37)(39,48)(40,44) involution — undirected(2,9)(3,12)(7,10)(13,14)(20,34)(25,41)(29,45)(33,42)(35,36)(38,44)(43,48)(46,47) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.